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Finding the Fourth Proportional to 368,310.90, 508,331.62 and 272,015.01

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Solution

The fourth proportional to 368,310.90, 508,331.62 and 272,015.01 is: 375,426.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,310.90 : 508,331.62 = 272,015.01 : x
  2. Step 2: Convert to fraction form
    368,310.90/508,331.62 = 272,015.01/x
  3. Step 3: Cross multiply
    368,310.90x = 508,331.62 × 272,015.01
  4. Step 4: Simplify right side
    368,310.90x = 138,273,831,802.68
  5. Step 5: Solve for x
    x = 138,273,831,802.68/368,310.90
  6. Step 6: Final answer
    x = 375,426.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.